Anne Hathaway recently said that she lost too much weight — 25 pounds — for her role as Fantine in "Les Miserables."
She said, “I lost the first 10 (pounds) in three weeks through a detox and then I lost the subsequent 15 in 14 days by doing food deprivation and exercise, which I don’t recommend." less

Anne Hathaway recently said that she lost too much weight — 25 pounds — for her role as Fantine in "Les Miserables."
She said, “I lost the first 10 (pounds) in three weeks through a detox and then I ... more

Photo: Jemal Countess, Getty Images

Image 4 of 38

Anne Hathaway in "Les Miserables."

Anne Hathaway in "Les Miserables."

Photo: Watchtower Films

Image 5 of 38

Actress Charlize Theron gained 30 pounds and wore prosthetic teeth for role as serial killer Aileen Wuornos in 2003's "Monster." She won an Oscar for the performance.

Actress Charlize Theron gained 30 pounds and wore prosthetic teeth for role as serial killer Aileen Wuornos in 2003's "Monster." She won an Oscar for the performance.

Photo: Jason Merritt, Getty Images

Image 6 of 38

Charlize Theron in "Monster."

Charlize Theron in "Monster."

Photo: AP

Image 7 of 38

Christian Bale, who weighed around 185, lost over 60 pounds for his role in "The Machinist."

Christian Bale, who weighed around 185, lost over 60 pounds for his role in "The Machinist."

Photo: JOHANNES EISELE, AFP/Getty Images

Image 8 of 38

Here is Bale in "The Machinist."

Here is Bale in "The Machinist."

Image 9 of 38

Bale then turned around and gained about 100 pounds immediately after for "Batman Begins."

Bale then turned around and gained about 100 pounds immediately after for "Batman Begins."

Photo: Stephen Vaughan, AP

Image 10 of 38

Gerard Butler sculpted some serious abs — and pecs and lats and ... — for the movie "300" by doing grueling workouts for up to six hours a day.

Gerard Butler sculpted some serious abs — and pecs and lats and ... — for the movie "300" by doing grueling workouts for up to six hours a day.

Photo: Andreas Rentz, 2012 Getty Images

Image 11 of 38

Gerard Butler in "300."

Gerard Butler in "300."

Photo: HO, REUTERS

Image 12 of 38

So, no, Cameron Diaz didn't put on an amazing amount of weight or anything, but the actress majorly de-glamourized herself for her part in Spike Jonze's "Being John Malkovich."

So, no, Cameron Diaz didn't put on an amazing amount of weight or anything, but the actress majorly de-glamourized herself for her part in Spike Jonze's "Being John Malkovich."

Photo: Stephen Lovekin, Getty Images

Image 13 of 38

Cameron Diaz and her frizzy, mousy hair in "Being John Malkovich."

Cameron Diaz and her frizzy, mousy hair in "Being John Malkovich."

Photo: Universal Studios, Getty Images

Image 14 of 38

A relative unknown actress at the time, Hilary Swank transformed into Brandon Teena, a non-operative transgender young man who was beaten, raped and murdered, in the film "Boys Don't Cry." She won an Oscar.

A relative unknown actress at the time, Hilary Swank transformed into Brandon Teena, a non-operative transgender young man who was beaten, raped and murdered, in the film "Boys Don't Cry." She won an Oscar.

Photo: Jamie McCarthy, Getty Images

Image 15 of 38

Hilary Swank in "Boys Don't Cry."

Hilary Swank in "Boys Don't Cry."

Photo: Fox Searchlight Pictures, SFC

Image 16 of 38

Renee Zellweger gained close to 30 pounds for her role as British singleton Bridget Jones in 2001's "Bridget Jones' Diary."
She tells the Daily Mail, "It sounds like heaven," she said. "For two days it's bliss and then you're full, OK? And you can then indulge all your fantasies about over-eating.
"Fantasies about non-stop chocolate consumption or your fantasies about ordering the pizza and the spaghetti and the garlic bread.
"Then after a week your glucose levels are going crazy. You're up and down and all over the place. It doesn't feel good, and no one wants to hear that, but it's the truth." less

Renee Zellweger gained close to 30 pounds for her role as British singleton Bridget Jones in 2001's "Bridget Jones' Diary."
She tells the Daily Mail, "It sounds like heaven," she said. "For two days it's ... more

Photo: Mike Coppola, 2011 Getty Images

Image 17 of 38

Renee Zellweger in "Bridget Jones's Diary."

Renee Zellweger in "Bridget Jones's Diary."

Photo: Miramax 2001

Image 18 of 38

For Tom Hanks' Oscar-nominated role in "Cast Away," the actor took time off after filming the first half of the film so he could lose 45 pounds and grow his hair out.

For Tom Hanks' Oscar-nominated role in "Cast Away," the actor took time off after filming the first half of the film so he could lose 45 pounds and grow his hair out.

Photo: Stephen Lovekin, Getty Images

Image 19 of 38

"Cast Away" Tom Hanks.

"Cast Away" Tom Hanks.

Photo: 20th Century Fox, SFC

Image 20 of 38

A far cry from his pretty boy Jordan Catalano character on "My So-Called Life," actor/musician Jared Leto gained more than 65 pounds to play to John Lennon's killer Mark David Chapman in the 2007 film "Chapter 27." He gained the weight so quickly, he developed gout. less

A far cry from his pretty boy Jordan Catalano character on "My So-Called Life," actor/musician Jared Leto gained more than 65 pounds to play to John Lennon's killer Mark David Chapman in the 2007 film "Chapter ... more

Photo: Michael Buckner, Getty Images For Fast Company

Image 21 of 38

Jared Leto stars as John Lennon assassin Mark David Chapman in "Chapter 27."

Jared Leto stars as John Lennon assassin Mark David Chapman in "Chapter 27."

Photo: JoJo Whilden, ASSOCIATED PRESS

Image 22 of 38

Matt Damon wasn't in Jason Bourne shape for "The Informant!" He gained 30 pounds for the role.

Matt Damon wasn't in Jason Bourne shape for "The Informant!" He gained 30 pounds for the role.

Rooney Mara transformed herself into "The Girl With the Dragon Tattoo"'s Lisbeth Sander by getting multiple piercings (including her nipple), shaving her eyebrows and losing a lot of weight.

Rooney Mara transformed herself into "The Girl With the Dragon Tattoo"'s Lisbeth Sander by getting multiple piercings (including her nipple), shaving her eyebrows and losing a lot of weight.

Photo: Kevin Winter, Getty Images

Image 27 of 38

Rooney Mara in "The Girl With the Dragon Tattoo."

Rooney Mara in "The Girl With the Dragon Tattoo."

Photo: Baldur Bragason, Sony Pictures

Image 28 of 38

Felicity Huffman won a Golden Globe and was nominated for an Oscar for her portrayal of a pre-operative transsexual in 2005's "Transamerica."

Felicity Huffman won a Golden Globe and was nominated for an Oscar for her portrayal of a pre-operative transsexual in 2005's "Transamerica."

Photo: Michael Buckner, Getty Images

Image 29 of 38

Felicity Huffman in "Transamerica."

Felicity Huffman in "Transamerica."

Photo: IFC Films, The Weinstein Company

Image 30 of 38

Actress Glenn Close spent a good amount of time in the makeup chair in order to turn into Albert Nobbs, a 19th century Irish woman who lives as a man, in the movie of the same name.

Actress Glenn Close spent a good amount of time in the makeup chair in order to turn into Albert Nobbs, a 19th century Irish woman who lives as a man, in the movie of the same name.

Photo: Mike Coppola, Getty Images For DirecTV

Image 31 of 38

Glenn Close in "Albert Nobbs."

Glenn Close in "Albert Nobbs."

Photo: Patrick Redmond, Roadside Attractions

Image 32 of 38

Singer Mariah Carey is rarely seen sans full makeup, hair and glitter, but for her role in "Precious: Based on the Novel 'Push' by Sapphire," she was decidedly unglam, going without makeup, as well as getting undereye bags and a hint of a mustache. less

Singer Mariah Carey is rarely seen sans full makeup, hair and glitter, but for her role in "Precious: Based on the Novel 'Push' by Sapphire," she was decidedly unglam, going without makeup, as well as getting ... more

Photo: Michael Buckner, Getty Images For BET

Image 33 of 38

Mariah Carey in "Precious: Based on the Novel 'Push' by Sapphire."

Mariah Carey in "Precious: Based on the Novel 'Push' by Sapphire."

Photo: Anne Marie Fox, Lionsgate

Image 34 of 38

For his role as neo-Nazi skinhead Derek Vinyard in 1998's "American History X," Edward Norton gained 30 pounds worth of muscle.

For his role as neo-Nazi skinhead Derek Vinyard in 1998's "American History X," Edward Norton gained 30 pounds worth of muscle.

Photo: Spencer Platt, Getty Images

Image 35 of 38

Edward Norton in "American History X."

Edward Norton in "American History X."

Photo: NewLine

Image 36 of 38

Tom Cruise strapped on a fake belly and balding wig for his role as movie mogul Les Grossman in Ben Stiller's "Tropic Thunder."

Tom Cruise strapped on a fake belly and balding wig for his role as movie mogul Les Grossman in Ben Stiller's "Tropic Thunder."

Depp, 50, is set to portray real-life mobster James "Whitey" Bulger in the project, and got into character by wearing a bald cap. He sported thin blond pieces of hair while dressed in eye-catching blue pants, a black T-shirt and a matching leather jacket.

Bulger was sentenced to two life sentences, plus five years, back in November, after being on the run for 16 years. He was considered a ruthless gangster in South Boston and was indicted for 19 murders.

Depp took on the role with no hesitation. "The reason to play him is obvious to me. He's a fascinating character," Amber Heard's fiance told Collider last month. "It's not like anything I've done before, on that level. I'm very excited to slide into that skin for a little bit."